

Yellow Fever is a fatal disease that causes yellowness and high fever. It is known to be highly contagious and it is mostly prevalent in Africa, where it is know n to be originated from. However, the derivations of this disease have reached other continents across the sea and they seem to be in different order. We mostly focused on the derivations within Africa and discovered that the geographical derivations of this disease also have different frequencies. We proved this phenomenon by analysing the sequences through apriori and decision tree.